Draft device for plows.



A. c LINDGREN. DRAFT DEVICE'FOR FLOWS.

APPLICATION FILED AUG.23. i912.

STA'ts rafrnnr f'FmgCQE..

ALEXUS C. LINDGREN, 0F MOLINE, IIILINOIS, ASSIGNOR TO MOLINEfPLOW V ACORPORATION 0F ILLINQS.

comrANY,

DRAFT DEVICE non PLoWs.

Specification of Letters Patent.

` Patented May 2, 1916.

' Application led August 2 3, 1912. Serial No. 716,573.

connection t0 be used between atractor and a gang plow for drawing thesame over the field. y ,v

In the use of ftraction engines for pulling a three or 'fourplow gang,it has heretofore been very diliicult to hitch the plow to the tractorin such manner as to keep the driving Wheel of the tractor away from thefurrow. wall. To do this, it has `been the practice to hitch the plow tothe righth'a-nd side of the tractor. but this has .resulted in a sidepull .on the tractor, rendering it very difficult, if notv impossible,to keep away from the furrow. Again', if the hitch usually consisting ofa chain were attached to the lefthand side of the plow, the latter wouldrun"sidewise, as the usual .hitching point on a four plow gang, forinstance, is between the second and third beams, constituting;r thetransverse center of the plow.

It is the aim of the present invention to overcome `these objections;and my invention consists of a draft device connected with the plow andadapted to be connected with the tractor, and so constructed that theplow will be disposed to the furrow side of the tractor,l and will bedrawn straight forward by the tractor, and both the tractor,

andplow will be free from side strains.`

In its more detailed form., the draft connection comprises a. stiffdraft frame consistiup,- of two draft bars connected at theirV rear endsto the front of the plow frame at The invention consists also incombining with a draft device of the construction described, anoperators platformmounted and sustained so as to bridge the spacebetween the plow and tractor.

In the accompanying drawings: Figure 1 1s a top plan view of a gang plowprovided with my improved draft device. Fig.V 2fis 'a side elevation ofthe gang plow and draft.

device. Fig. 3 is a transverse sectionalelevation on the' line 3-3 `ofthe preceding-figure, looking rearward. Fig. 4 is a diagrammatic viewshowing particularly the furrowward displacement of the plow relative tothe tractor and indicating how the latter is enabled to travel on theland without danger of approaching the furrow wall too closely.

Referring tothe drawings: l represents a plow, in the present instance agang plow having four moldboard plows 2,` 3, 4 and 5,

which are sustained by a frame comprising' longitudinallyextendingubeams 6, 7 and 8, to which the moldboards 2, 3 and 4 arerespectively attached, and a third beam 9 connected with the side ofbeam 8 and carrying` the moldboard 5. These'` beams are suitably bracedby diagonal braces 10 and 11 connecting the beams 6, 7 and 8 together,and at their forward ends the beams are connected together lby means ofa horizontal transverse strap 12 bolted at one end firmly to the beam'6and connected by means of a bracket plate 13 to the beam 'l'. andconnected at its opposite end to the forward end of beam 8 by a Z-shapedbracket 14 havinga horizontal extension 14:, the purpose of which willbe presently described. As a result of the construction described, anintegral plow frame structure is produced which is suit- -ably supportedat the landside by a wheel 15, and at the furrowside by a furrow wheel16, said wheels being' mounted on axles sus'- v 45 two points separatedfrom each other transversely, and connected at their forward endstogether and .to the vtractor at or 'about'the .center of the same andin a longitudinal forwardly extending draft vbars 1'7 and 18` 100 wlnch'are connected together at their lforward ends, as at 19, and which are*connectline disposed landward of the transverse center of theplo`w, therelativezconstruc'- tion and arrangementv of the draft connec tion beingsuch that while the plow willA be disposed furrowward of the tractor toenable the tractor to travel on the land, the plow will follow straightin the line of draft.

`ed at their rear ends to the plow frame at points separated from eachother in a transverse direction, the draftbars thus diverg ing lfromtheir forward ends to the rear, where they: are connected with the plowframe. The connection of the rear ends of the bars with the plow frameis preferably effected through. the medium of a transverse frame 111112O extending' 110111 the beam 6 at a point in line 'with the111oldhoa1'11 l'to 11 point beyond the beam 8 and terniinatihg 111 linewith the 111011111011111 5. T1115v frame 1111.1' hars one end extendedvercrdly, as at 2l., which vertical extension is provided 'wi'h :1number 111;' holt holes to receive the '111% tening bolt 23,1111." 111g111111111111 the .b c1111 11.1 a bracket 24 extending forwardly1'1'111'11 the forward 111111 of beam G. .55eme 11191111161113111111 itsopposite c11117 the frame. 1111.1' has fixed to it 11. vertical bracketplate f 11111111131' a 1111111 bei.' of bolt holesA 2G therein 'toreceive a 'the temine' holt 211' 111151111112.' 'through the exte11-sion '14, before alluded to, 1111 thc 1111'11'111'11 111111 of 11111111111; 111111 between these 11111 111111113#v of atta .1111191113 111 the.frame 11111;r` the latter is proi'ided with 11 'Vernd braeaet 11h11..liai'iiilI f1 1111" 1 111 .holes to receive 11 1111111151' 11011; S225?1 Singe; broiigh thowitru" t hy 1111111211 1.1111111151 1111'1.1'111111'1'1'1'511 frame 1' is; connected Awith the 111111111'. o1"1h15 1111111' :11 11:1 iront 111 smh 111111111111` that the 11:11'11111;' 111'A adjusted `vertically 111 relation th lieto.

The upper end 111' the bracket phite l1 'ac-ed to the 111.11111- e1111of the 1311111115 11111' by means of 11 diagonally extending brace 2f)comicced et ih; 11111151' to said perils; 111111 said 111111111' end ofthe '111111111 y1:11' is also 1111111111 1.11

the. 111111111 by means of a rcai'ii'ai'dly e1;- tehding' brace 11111'il() 1'; :11315111111 at its 'forward c1111 he 111 the brace 29111111111111111 11;'11' 11n-:l connected at ite 111:11' c1111 to :1plate 3i fixed to the beam .21. By this 1111111111:? the '1;1'11115yeree '1111111111 11111' iS; 111ai11t11i11ed 116111111111611 horizontalg itifiii at the. iront oft .1e 1111111' 1111111115, While oeiiigcapable 11i' a rc1-1111111 1111- jfisimch* i 11111' tl 111111113''fastened 1113111111 110,111,151 by 1 f* a fastening; 111111 i8, 111111the har l? 11151119' 'fastened adjustably by .means ofv a holt 17""adapted to be passed through 11.1131' one of a. 111" hoie's 17h iii thebar 17. The draft hars l? and-18, conf 1" and applied '115.5111111'11,constitute' a.

Recto., .draft 1levi1fe"11'l1ich when the two hars are 211.1111511111111the rei'ation Shown in Fig. l, connected :1t its rear c1111 to the'opposite ends of the transverse har and has its forward end, where thetwo har.' are connected 'togethcr, and at which point it is adapted to-be hitched to the tractor, arranged in a ngitudinal line disposedlandward of a point 1111111111137 between the. points of attachment ofthel111rs 'with the frame. bar. The draft bars l1 111111 18., inconnection with the transveree'l'ranie 11511' to which they :1reconneced, constitute 1.11 111111111; :1 tr'zarlgiilar draft frame, the1111111111111 c1111 111' apex of which if; 1111111111111 1111111connected 11111111 the tractor, 1111 vhich. apex is 111111111551111 'te111e iaodeide of edial 11111111 between 'the points i111 1:01111' ci therear ends o? 1 draft hars 1 .1 the traiisv'erse frame bar. 11.5 aresiiit of this construction and relation of the parts, when.

theV draft device is connected with the tractor at 111' about the centerof the s111111'e that is, at :1 point midway between the two wheels, asshown more particularly in Fig. 4, the een.- ter ot the 1111111211111 bedisposal 'f111'r111v11'a1'd of thc. center oi' the tractor 111'displaced to the furrow Side 11il thc tractor, andthe plow `will bedrawn .fstrnih'l'it 'forward in the line travel 111Ll the tractor 1111111111.1 11e free from eide 1111111115 or 1111111' forces 'which might1151111 to 111111 thetractoi' 1111111111111; furrow 111' the 1111111'toward the 1111111.

l11i the 1111111' relative to the tractor may be 1111151111; 111e1.1111111 to be 11111111111 111 the 0ppm 'lite direction, these. changesresulting also in 111e change of the point at which the compo- 111'11t11i" 111'; ft forces will :1ct 1111 thc`plow.

The 11111153111111111111 described coi'istitiiles a stili draft111111191111111 which when coupled with :1 tractor 'will 11111111111?111e 1111111' 'frame a coim'idci'able distance '13111111 the tractorwith 1.1111 11111111'. 1'i hitch to the 1,-.':11't111' Substantially 11111111J with the 1111111 111' 1.111111111111111', landside 111111111 111the perth-111111' 1131111111111 1111011111:. This will displace 'the1111111' :1 considerable distance 1'111'1'1111'11' 1e. tractor, so that111 the 11u-url 11.1' over the field the 'tractor 111111 have 111 -dy111' room to tfavel with both 111111111111.' 1111111.111.'111111111111111 ground, :11111 the 1111111." will be 111'11 w11straight forward 111 111e .11119. of travel ofthe t '11111111'.

'1' 111111211150 in connection with 'the draft device described to111111111151 1111 111111111111195 plat .1:111'111 1o bridge the Spacebetween 'the plow :11111 tractor. The 111111311111111 indi 'ated hy the1111111c1'11l is 11.1.1311 o two 'fore and aft brach` .s-13, 351',having 1 1epcn1'1i11g front and rear feet 14 :1 1d 311, respectively.The rear feet "1.11112 the brackets are. fixed and s11stained by theframe har 2G by 1111311115 11i fas" teniug bolts 2311, 311, while thefront feet 5' of the rackets are connected together by a horizontaltransverse'. "bar 377 'which rests loosely on :11111 is sustained by thedraft hars 17 'and 18 near theirl front'. By this means the platform'issustained al. 111s rear by the frame of the plow 1111151 at l11S frontby the draft device, the loose support afforded the platform hy thedraft device. as described en- 1111111 111111111 '1* :11111 1:1'1 v1ed11 1f improved d" the 11111.11 if.

and which in practice has been found to answer to a satisfactory degreethe ends to be attained, it will be understood that the details may bevariously changed within the skill of the mechanic without departurefrom the' spirit of the invention, and it will be further understoodthat my invention is not limited to any particular form or constructionof the parts except in so far as such limi- 'tations are contained inthe appended claims.

Having thus described my invention, what I claim is:

1. In combination with a gang plow having a front transverse frame bar,forwardly extending draft bars connected at their rear ends to saidvframe bar and connected to gether at their forward ends, the said framebar and draft bars constituting in effect a rigid, stiff, triangulardraft frame, whose apex is disposed landward of a point midway betweenthe points of connection of said draft bars with the transverse bar;whereby when the apex of said draft frame is connected to the center ofa tractor, the gang plow will be drawn straight forward in the line oftravel without deflection.

2. In combination with a tractor, a gang plow, a transverse frame barconnecte@v with said gang plow, and two forwardly extending draft barsconnected at their rear ends with the frame bar and connected togetherat their forward ends, thereby constituting a stiff, rigidi triangulardraft frame, the apex of whichiis disposed to the landside of a medial.point between the points of connection of the draft bars with thetransverse bar, and which apex is connected with the tractor at a point,midway or substantially so, between the wheels of the same.

3. In combination with a plow having a front transverse frame bar,forwardly-extending draft bars connected to said frame bar, and aplatform sustained at its rear by the transverse frame bar and movablysustained at its front by said draft bars.

4. In combination with a plow having a front transverse frame bar,forwardly-extending draft bars connected to the said transverse bar,fore and aft brackets sus- ALEXUS C. LINDGREN.

Witnesses:

T. C. BLANDING, JAMES J. LAMB.

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